Add extra space to your Knebworth home from £41,920

Dormer loft conversions are ideal if you want to add lots of extra space to your home. Adding a box-like structure or structures to the roof, you essentially extend the roofline to add significant square footage to your loft space. This makes dormer loft conversions one of the most popular loft conversion types, as they're ideal for adding a new main bedroom with en-suite or even a self-contained living space. To see prices and availability for your job click green button.

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From £42,456

Last active Oct 26
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Up and Out Builds Ltd

Relax... you have found a reliable extension builder in Knebworth. Up and Out Builds Ltd is a friendly and reliable company based in Knebworth who ...

From £41,968

Last active Oct 26
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A S G Developments - Herts LTD

Amarjeet Gill

Architecture and Construction all in one place. 

FREE DRAWINGS for all projects we build. 

From £42,232

Last active Oct 26
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Buyerz Trading

Buyerz Trading is an established and experienced local extension builder in Knebworth. Please contact us for a free, no obligation quote and compet...

From £42,536

Last active Oct 26
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R. Newman Construction

Are you looking for resin driveways in North London? We are a leading builder of driveways and patios in North London. We have expertise in various...

From £42,072

Last active Oct 26
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A1 Home Care Building Maintenance

A1 Home Care Building Maintenance are here to help customers who need an Extension Builder in Knebworth. We offer a competitive rate to complete al...

From £42,016

Last active Oct 26
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FULLERS BUILDING SERVICES

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £42,144

Last active Jul 26
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Amcell Renovations

Trusted and professional extension builder in Knebworth. Experienced in all extension buildering work and keeping within budget and on quote. Amcel...

From £41,920

Last active Jul 26
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MA Gower

Need an Extension Builder in Knebworth? MA Gower has been helping local clients (20 mile radius) with their extension buildering jobs for many year...

From £42,192

Last active May 26
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Red Swan Construction

In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

From £42,016

Last active Apr 26
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G B BUILDSTORE LTD

Gary Braine

Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in Knebworth. No obligation free quote...

Cost of dormer loft conversions in Knebworth

Estimates for build a dormer loft conversion near Knebworth

In Knebworth, prices for dormer loft conversions range from £41,920 (MA Gower based in AL6) to £42,536 (R. Newman Construction based in AL4), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for. 

The best way to get an accurate price is to compare quotes from extension builders in Knebworth. Post your job on HaMuch now and we'll put you in touch with available extension builders.


Estimates for common extension builder jobs in Knebworth;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

More extensions & conversions cost guides...